Great-circle route IST ↔ ORD. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| IST → ORD Istanbul to Chicago |
14/wk | Daily | Turkish Airlines |
| ORD → IST Chicago to Istanbul |
14/wk | Daily | Turkish Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 410,322 passengers on 1,510 flights between IST and ORD — about 1,125 a day — filling 84% of the 487,379 seats flown. Turk Hava Yollari A.O. carried the most passengers (100%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
Turkish Airlines is the only airline flying the IST–ORD nonstop.
Recent scheduled departures on this route have used the Airbus A330-300.
Aircraft assignments change by season and by time of day.
On a long east–west route like this one the two directions do not take the same time. Aircraft flying eastbound ride the mid-latitude jet stream and typically arrive earlier than the westbound leg, which flies into it. The difference is commonly 30 to 90 minutes on transatlantic and transpacific flights, and it varies by season. The estimate above does not model wind — treat it as a midpoint and check the airline's own timetable for the block time on your date.
The distance between Istanbul Airport and Chicago O'Hare International Airport is 5,459 miles, or 8,785 kilometres.
| Great-circle distance | 5,459 mi |
| Kilometres | 8,785 km |
| Nautical miles | 4,744 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. Turkish Airlines flies the route nonstop, with about 28 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 11h 00m in the air. That is a great-circle estimate from the 5,459-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 14 a week from Istanbul to Chicago and 14 a week from Chicago to Istanbul, from our most recent schedule sample.
Turkish Airlines.
In 2025, airlines reported 410,322 passengers on 1,510 scheduled flights between IST and ORD — about 1,125 a day — filling 84% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Airbus A330-300. Assignments change by season and by time of day.
